1.An analysis on clinical characteristics and prognosis-related risk factors in patients with drug-induced liver injury
Qian WEI ; Lei LI ; Xiaoqing ZENG ; Abidan Bai He Ti Ya Er ; Jie YIN ; Hong GAO ; Jinsheng GUO
Chinese Journal of Hepatology 2024;32(3):214-221
Objective:To explore the drugs and clinical characteristics causing drug-induced liver injury (DILI) in recent years, as well as identify drug-induced liver failure, and chronic DILI risk factors, in order to better manage them timely.Methods:A retrospective investigation and analysis was conducted on 224 cases diagnosed with DILI and followed up for at least six months between January 2018 and December 2020. Univariate and multivariate logistic regression analyses were used to identify risk factors for drug-induced liver failure and chronic DILI.Results:Traditional Chinese medicine (accounting for 62.5%), herbal medicine (accounting for 84.3% of traditional Chinese medicine), and some Chinese patent medicines were the main causes of DILI found in this study. Severe and chronic DILI was associated with cholestatic type. Preexisting gallbladder disease, initial total bilirubin, initial prothrombin time, and initial antinuclear antibody titer were independent risk factors for DILI. Prolonged time interval between alkaline phosphatase (ALP) and alanine aminotransferase (ALT) falling from the peak to half of the peak (T 0.5ALP and T 0.5ALT) was an independent risk factor for chronic DILI [area under the receiver operating characteristic curve (AUC)?=?0.787, 95%CI: 0.697~0.878, P ?0.001], with cutoff values of 12.5d and 9.5d, respectively. Conclusion:Traditional Chinese medicine is the main contributing cause of DILI. The occurrence risk of severe DILI is related to preexisting gallbladder disease, initial total bilirubin, prothrombin time, and antinuclear antibodies. T 0.5ALP and T 0.5ALT can be used as indicators to predict chronic DILI.
2.A multicenter study of neonatal stroke in Shenzhen,China
Li-Xiu SHI ; Jin-Xing FENG ; Yan-Fang WEI ; Xin-Ru LU ; Yu-Xi ZHANG ; Lin-Ying YANG ; Sheng-Nan HE ; Pei-Juan CHEN ; Jing HAN ; Cheng CHEN ; Hui-Ying TU ; Zhang-Bin YU ; Jin-Jie HUANG ; Shu-Juan ZENG ; Wan-Ling CHEN ; Ying LIU ; Yan-Ping GUO ; Jiao-Yu MAO ; Xiao-Dong LI ; Qian-Shen ZHANG ; Zhi-Li XIE ; Mei-Ying HUANG ; Kun-Shan YAN ; Er-Ya YING ; Jun CHEN ; Yan-Rong WANG ; Ya-Ping LIU ; Bo SONG ; Hua-Yan LIU ; Xiao-Dong XIAO ; Hong TANG ; Yu-Na WANG ; Yin-Sha CAI ; Qi LONG ; Han-Qiang XU ; Hui-Zhan WANG ; Qian SUN ; Fang HAN ; Rui-Biao ZHANG ; Chuan-Zhong YANG ; Lei DOU ; Hui-Ju SHI ; Rui WANG ; Ping JIANG ; Shenzhen Neonatal Data Network
Chinese Journal of Contemporary Pediatrics 2024;26(5):450-455
Objective To investigate the incidence rate,clinical characteristics,and prognosis of neonatal stroke in Shenzhen,China.Methods Led by Shenzhen Children's Hospital,the Shenzhen Neonatal Data Collaboration Network organized 21 institutions to collect 36 cases of neonatal stroke from January 2020 to December 2022.The incidence,clinical characteristics,treatment,and prognosis of neonatal stroke in Shenzhen were analyzed.Results The incidence rate of neonatal stroke in 21 hospitals from 2020 to 2022 was 1/15 137,1/6 060,and 1/7 704,respectively.Ischemic stroke accounted for 75%(27/36);boys accounted for 64%(23/36).Among the 36 neonates,31(86%)had disease onset within 3 days after birth,and 19(53%)had convulsion as the initial presentation.Cerebral MRI showed that 22 neonates(61%)had left cerebral infarction and 13(36%)had basal ganglia infarction.Magnetic resonance angiography was performed for 12 neonates,among whom 9(75%)had involvement of the middle cerebral artery.Electroencephalography was performed for 29 neonates,with sharp waves in 21 neonates(72%)and seizures in 10 neonates(34%).Symptomatic/supportive treatment varied across different hospitals.Neonatal Behavioral Neurological Assessment was performed for 12 neonates(33%,12/36),with a mean score of(32±4)points.The prognosis of 27 neonates was followed up to around 12 months of age,with 44%(12/27)of the neonates having a good prognosis.Conclusions Ischemic stroke is the main type of neonatal stroke,often with convulsions as the initial presentation,involvement of the middle cerebral artery,sharp waves on electroencephalography,and a relatively low neurodevelopment score.Symptomatic/supportive treatment is the main treatment method,and some neonates tend to have a poor prognosis.
3.Molecular mechanism of ligustilide attenuating OGD/R injury in PC12 cells by inhibiting ferroptosis.
Lei SHI ; Chen-Chen JIANG ; Jia-Jun LU ; Zi-Xu LI ; Wang-Jie LI ; Xiu-Yun YIN ; Zhuo CHEN ; Xin-Ya ZHAO ; Hui ZHANG ; Hao-Ran HU ; Lu-Tan ZHOU ; Jun HAN
China Journal of Chinese Materia Medica 2023;48(11):3046-3054
The aim of this study is to explore the mechanism of ligustilide, the main active constituent of essential oils of traditional Chinese medicine Angelicae Sinensis Radix, on alleviating oxygen-glucose deprivation/reperfusion(OGD/R) injury in PC12 cells from the perspective of ferroptosis. OGD/R was induced in vitro, and 12 h after ligustilide addition during reperfusion, cell viability was detected by cell counting kit-8(CCK-8) assay. DCFH-DA staining was used to detect the level of intracellular reactive oxygen species(ROS). Western blot was employed to detect the expression of ferroptosis-related proteins, glutathione peroxidase 4(GPX4), transferrin receptor 1(TFR1), and solute carrier family 7 member 11(SLC7A11), and ferritinophagy-related proteins, nuclear receptor coactivator 4(NCOA4), ferritin heavy chain 1(FTH1), and microtubule-associated protein 1 light chain 3(LC3). The fluorescence intensity of LC3 protein was analyzed by immunofluorescence staining. The content of glutathione(GSH), malondialdehyde(MDA), and Fe was detected by chemiluminescent immunoassay. The effect of ligustilide on ferroptosis was observed by overexpression of NCOA4 gene. The results showed that ligustilide increased the viability of PC12 cells damaged by OGD/R, inhibited the release of ROS, reduced the content of Fe and MDA and the expression of TFR1, NCOA4, and LC3, and improved the content of GSH and the expression of GPX4, SLC7A11, and FTH1 compared with OGD/R group. After overexpression of the key protein NCOA4 in ferritinophagy, the inhibitory effect of ligustilide on ferroptosis was partially reversed, indicating that ligustilide may alleviate OGD/R injury of PC12 cells by blocking ferritinophagy and then inhibiting ferroptosis. The mechanism by which ligustilide reduced OGD/R injury in PC12 cells is that it suppressed the ferroptosis involved in ferritinophagy.
Animals
;
Rats
;
PC12 Cells
;
Ferroptosis/genetics*
;
Reactive Oxygen Species
;
Transcription Factors
;
Glutathione
4.Prolonging dual antiplatelet therapy improves the long-term prognosis in patients with diabetes mellitus undergoing complex percutaneous coronary intervention.
Jing-Jing XU ; Si-Da JIA ; Pei ZHU ; Ying SONG ; De-Shan YUAN ; Xue-Yan ZHAO ; Yi YAO ; Lin JIANG ; Jian-Xin LI ; Yin ZHANG ; Lei SONG ; Run-Lin GAO ; Ya-Ling HAN ; Jin-Qing YUAN
Journal of Geriatric Cardiology 2023;20(8):586-595
OBJECTIVE:
To investigate the optimal duration of dual antiplatelet therapy (DAPT) in patients with diabetes mellitus (DM) requiring complex percutaneous coronary intervention (PCI).
METHODS:
A total of 2403 patients with DM who underwent complex PCI from January to December 2013 were consecutively enrolled in this observational cohort study and divided according to DAPT duration into a standard group (11-13 months, n = 689) and two prolonged groups (13-24 months, n = 1133; > 24 months, n = 581).
RESULTS:
Baseline characteristics, angiographic findings, and complexity of PCI were comparable regardless of DAPT duration. The incidence of major adverse cardiac and cerebrovascular event was lower when DAPT was 13-24 months than when it was 11-13 months or > 24 months (4.6% vs. 8.1% vs. 6.0%, P = 0.008), as was the incidence of all-cause death (1.9% vs. 4.6% vs. 2.2%, P = 0.002) and cardiac death (1.0% vs. 3.0% vs. 1.2%, P = 0.002). After adjustment for confounders, DAPT for 13-24 months was associated with a lower risk of major adverse cardiac and cerebrovascular event [hazard ratio (HR) = 0.544, 95% CI: 0.373-0.795] and all-cause death (HR = 0.605, 95% CI: 0.387-0.944). DAPT for > 24 months was associated with a lower risk of all-cause death (HR = 0.681, 95% CI: 0.493-0.942) and cardiac death (HR = 0.620, 95% CI: 0.403-0.952). The risk of major bleeding was not increased by prolonging DAPT to 13-24 months (HR = 1.356, 95% CI: 0.766-2.401) or > 24 months (HR = 0.967, 95% CI: 0.682-1.371).
CONCLUSIONS
For patients with DM undergoing complex PCI, prolonging DAPT might improve the long-term prognosis by reducing the risk of adverse ischemic events without increasing the bleeding risk.
5.Epidemiological characteristics of public health emergencies in Xishuangbanna Dai Autonomous Prefecture, Yunnan, 2012-2021
WANG Yu ; ZAI Ya-min ; BAO Lei ; WANG Jiang-ning ; SHI Jing-yin ; LI Hai-yan
China Tropical Medicine 2022;22(11):1082-
Abstract: Objective To analyze the epidemiological characteristics of public health emergencies in Xishuangbanna Dai Autonomous Prefecture from 2012 to 2021, and to provide reference for formulating relevant prevention and control measures. Methods The data of public health emergencies reported in Xishuangbanna from 2012 to 2021 were collected and analyzed through the China Disease Prevention and Control Information System. Results A total of 78 public health emergencies (including "Unrated" events) were reported in Xishuangbanna from 2012 to 2021. The highest 21 cases and the lowest 3 cases were reported every year. A total of 1 0374 cases were reported in 78 public health emergencies, involving a population of 1 703 049, with a morbidity of 609.14/100 000, 24 deaths, mortality of 1.41/100 000 and fatality rate of 231.35/100 000. The event level was mainly "general (level Ⅳ)" with 52 incidents, accounting for 66.67%, and 17 incidents of "major (level Ⅲ)", accounting for 21.79%. 51 cases were mainly infectious diseases, accounting for 65.39%. The peak periods for incidents were May-July and November-February of the next year; there were 39 incidents in schools, accounting for 50%, followed by 20 incidents in families, accounting for 25.64%. The top three reported cases were food poisoning (32.05%), chicken pox 17 (21.79%) and dengue fever 10 (12.82%). Among the 24 deaths in public health emergencies, 22 were caused by food poisoning. Wild bacteria poisoning and alcohol poisoning were the main causes of food poisoning, accounting for 45.83% and 37.5% of the total deaths, respectively. Conclusion Infectious diseases, especially respiratory diseases and food poisoning are the focus of the prevention and control of public health emergencies in Xishuangbanna Dai Autonomous Prefecture, of which Schools and families should be pay close attention. Plague, a Class A infectious disease, caused by the bacterium Yersinia pestis has occurred in two inter-animal outbreaks in 10 years and spread to the population, which should be of great concern.
6.Soluble egg antigen of Schistosoma japonicum induces macrophage apoptosis in mice.
Guo YIN ; Xin QI ; Ya Lin LI ; Lei XU ; Sha ZHOU ; Xiao Jun CHEN ; Ji Feng ZHU ; Chuan SU
Chinese Journal of Schistosomiasis Control 2022;34(3):259-268
OBJECTIVE:
To investigate the dynamic changes of macrophage numbers and apoptosis during Schistosoma japonicum infection, and to investigate the possible mechanisms of macrophage apoptosis induced by S. japonicum soluble egg antigen (SEA).
METHODS:
C57BL/6 mice at ages of 6~8 weeks were randomly divided into 4 groups, including three experimental groups and a normal control group. Each mouse in the experimental groups was infected with (12 ± 1) cercariae of S. japonicum via the abdominal skin, and all mice in an experimental group were sacrificed 3, 5, 8 weeks post-infection, respectively, while mice in the control group were not infected with S. japonicum cercariae and sacrificed on the day of S. japonicum infection in the experimental group. Mouse liver specimens and peritoneal exudation cells were sampled in each group, and the dynamic changes of macrophage numbers and apoptosis were detected. Mouse peritoneal macrophages were isolated, purified and treated with S. japonicum SEA, PBS and ovalbumin (OVA) in vitro, and the macrophage apoptosis was detected using flow cytometry. The mRNA and protein expression of BCL-2 protein family members were determined in macrophages using real-time quantitative PCR (qP-CR) and Western blotting assays, and the activation of caspase 3 was determined using flow cytometry and Western blotting. In addition, macrophages were in vitro treated with S. japonicum SEA in presence of a caspase inhibitor, H2O2 or N-acetyl-L-cysteine, and the apoptosis of macrophages was detected using flow cytometry.
RESULTS:
The total macrophage numbers continued to increase in mouse liver [(0.873 ± 0.106) × 106, (2.737 ± 0.460) × 106 and (3.107 ± 0.367) × 106 cells, respectively; F = 81.900, P < 0.01] and peritoneal specimens [(5.282 ± 1.136) × 105, (7.500 ± 1.200) × 105 and (12.800 ± 0.800) × 105 cells, respectively; F = 55.720, P < 0.01] 3, 5 and 8 weeks post-infection with S. japonicum, and the numbers of apoptotic macrophages also continued to increase in mouse liver [(0.092 ± 0.018) × 106, (0.186 ± 0.025) × 106 and (0.173 ± 0.0270) × 106 cells; F = 57.780, P < 0.01] and peritoneal specimens [(0.335 ± 0.022) × 105, (0.771 ± 0.099) × 105 and (1.094 ± 0.051) × 105 cells; F = 49.460, P < 0.01] 3, 5 and 8 weeks post-infection with S. japonicum. The apoptotic rate of SEA-treated macrophages [(24.330 ± 0.784)%] was significantly higher than that of PBS-[(18.500 ± 1.077)%] and OVA-treated macrophages [(18.900 ± 1.350)%] (both P values < 0.01). There were no significant differences in the mRNA or protein expression of Bcl-2 [Bcl - 2 mRNA expression: (1.662 ± 0.943) vs. (1.000 ± 0.000), t = 1.215, P > 0.05; BCL protein expression: (0.068 ± 0.004) vs. (0.070 ± 0.005), t = 0.699, P > 0.05], Bax [Bax mRNA expression: (0.711 ± 0.200) vs. (1.000 ± 0.000), t = 2.507, P > 0.05; BAX protein expression: (0.089 ± 0.005) vs. (0.097 ± 0.003), t = 2.232, P > 0.05] and Bak [Bak mRNA expression: (1.255 ± 0.049) vs. (1.00 ± 0.00), t = 0.897, P > 0.05; BAK protein expression: (0.439 ± 0.048) vs. (0.571 ± 0.091), t = 2.231, P > 0.05] between in SEA- and PBS-treated macrophages. S. japonicum SEA induced macrophage apoptosis in the presence of a caspase inhibitor (F = 0.411, P > 0.05); however, SEA failed to induce macrophage apoptosis in the presence of H2O2 or NAC (F = 11.880 and 9.897, both P values < 0.05).
CONCLUSIONS
S. japonicum SEA may induce macrophage apoptosis through promoting reactive oxygen species expression during S. japonicum infections in mice.
Animals
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Apoptosis
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Caspases
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Hydrogen Peroxide
;
Macrophages
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Mice
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Mice, Inbred C57BL
;
RNA, Messenger
;
Schistosoma japonicum
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Schistosomiasis japonica
;
bcl-2-Associated X Protein
7.Comparative study of CASIA2 and PentacamHR measuring corneal thickness and anterior chamber depth
Shuai-Shuai LIU ; Lei DING ; Li-Li ZHAO ; Meng-Ya CHENG ; Xi-Liang YIN
International Eye Science 2022;22(11):1922-1926
AIM: To compare the difference, correlation and consistency of the new anterior segment coherence tomography CASIA2 and PentacamHR in measuring apex corneal thickness, thinnest corneal thickness, corneal thinnest point position and anterior chamber depth.METHODS: A prospective study. A total of 40 myopic patients(80 eyes)who received refractive surgery were enrolled from the March 2021 to April 2021 in Hefei Aier Eye Hospital. CASIA2 and PentacamHR were used respectively to measure apex corneal thickness, thinnest corneal thickness, position of thinnest corneal point and depth of anterior chamber. The paired t-test was used to compare the differences of the parameters. Pearson correlation coefficient and Bland-Altman 95% consistency limit method were used to measure the correlation and consistency of the two instruments.RESULTS: The corneal apex thickness and the thinnest corneal thickness measured by CASIA2 were smaller than those measured by PentacamHR(all P<0.001), but the consistency limit was narrow(-26.6-11.6, -29.53-13.51μm). There was no significant difference between the results of anterior chamber depth measured by CASIA2 and PentacamHR(t=1.634,P=0.106). The results of the position distribution of the thinnest point measured by the two instruments showed good consistency(right eye:Z=0.000, P>0.999; left eye:Z=0.149,P=0.882), and there was no significant difference in the X-axis displacement and Y-axis displacement of the thinnest point, and the distance between the thinnest point and the corneal apex(P>0.05).CONCLUSION:The apex corneal thickness, the thinnest corneal thickness, the position of the thinnest corneal point and the anterior chamber depth measured by the CASIA2 and PentacamHR are in good consistency. However, in clinical work, the slight differences between the parameters of the two instruments should be taken into consideration, and it is not recommended to replace them directly.Moreover, the extremely high scanning speed of CASIA2 makes it more advantageous than PentacamHR in clinical application.
8. Mechanism of Eucommiae ulmoides and Radix Dipsaci in prevention and treatment of osteoporosis:An analysis based on network pharmacology and cell experiment
Yu-Miao ZHANG ; Yang LIU ; Yan-Ping LIU ; Yin-Gang LI ; Ya-Lei PAN
Chinese Pharmacological Bulletin 2022;38(9):1401-1408
Aim To investigate the effect and mechanism of Eucommiae ulmoides and Radix Dipsaci in the treatment of osteoporosis.Methods The active ingredients of Eucommiae ulmoides and Radix Dipsaci were obtained by TCMSP,BATMAN-TCM platform and the literature.Osteoporosis related genes were collected by GeneCards and OMIM.The compound target network was constructed with Cytoscape 3.7.2 software.The protein interaction network was constructed with STRING online website.DAVID was used to perform gene ontology(GO)enrichment analysis and kyoto encyclopedia of genes and genomes(KEGG)pathway enrichment analysis.The synergistic effect of Eucommiae ulmoides and Radix Dipsaci was tested by osteo-blast proliferation,alkaline phosphatase expression and mineralized nodule formation experiments.The protein expressions of BMP2 and Wnt signaling pathway were investigated by Western blotting.Results A total of 44 active components of Eucommiae ulmoides and 17 active components of Radix Dipsaci were screened,and 80 targets were intersected by osteoporosis.GO analysis showed that the action mechanism of Eucommiae ulmoides and Radix Dipsaci in the treatment of osteoporosis was involved with 52 items of biological process,8 items of cell composition and 16 items of molecular function.The KEGG enrichment pathway was dominated by 6 major signaling pathways.Compared with the control group,the osteoblast proliferation,alkaline phosphatase expression and mineralized nodule formation significantly increased in Eucommiae ulmoides or Radix Dipsaci group(P<0.01).Western blotting showed that Eucommiae ulmoides mainly regulated the expression levels of Wnt signaling pathways(P<0.05 or P<0.01),and Radix Dipsaci up-regulated the expression levels of BMP2 signaling pathways(P<0.01).Meanwhile,Eucommiae ulmoides and Radix Dipsaci significantly enhanced these effects,respectively(P<0.01).Conclusions Although Eucommiae ulmoides and Radix Dipsaci have different active components,their main targets and pathways are the same in the treatment of osteoporosis.Eucommiae ulmoides and Radix Dipsaci can regulate the function of osteoblasts through BMP2 and Wnt signaling pathways,and the combination of the two drugs in the treatment of osteoporosis has synergistic effect.
9.Inverted U-Shaped Associations between Glycemic Indices and Serum Uric Acid Levels in the General Chinese Population: Findings from the China Cardiometabolic Disease and Cancer Cohort (4C) Study.
Yuan Yue ZHU ; Rui Zhi ZHENG ; Gui Xia WANG ; Li CHEN ; Li Xin SHI ; Qing SU ; Min XU ; Yu XU ; Yu Hong CHEN ; Xue Feng YU ; Li YAN ; Tian Ge WANG ; Zhi Yun ZHAO ; Gui Jun QIN ; Qin WAN ; Gang CHEN ; Zheng Nan GAO ; Fei Xia SHEN ; Zuo Jie LUO ; Ying Fen QIN ; Ya Nan HUO ; Qiang LI ; Zhen YE ; Yin Fei ZHANG ; Chao LIU ; You Min WANG ; Sheng Li WU ; Tao YANG ; Hua Cong DENG ; Jia Jun ZHAO ; Lu Lu CHEN ; Yi Ming MU ; Xu Lei TANG ; Ru Ying HU ; Wei Qing WANG ; Guang NING ; Mian LI ; Jie Li LU ; Yu Fang BI
Biomedical and Environmental Sciences 2021;34(1):9-18
Objective:
The relationship between serum uric acid (SUA) levels and glycemic indices, including plasma glucose (FPG), 2-hour postload glucose (2h-PG), and glycated hemoglobin (HbA1c), remains inconclusive. We aimed to explore the associations between glycemic indices and SUA levels in the general Chinese population.
Methods:
The current study was a cross-sectional analysis using the first follow-up survey data from The China Cardiometabolic Disease and Cancer Cohort Study. A total of 105,922 community-dwelling adults aged ≥ 40 years underwent the oral glucose tolerance test and uric acid assessment. The nonlinear relationships between glycemic indices and SUA levels were explored using generalized additive models.
Results:
A total of 30,941 men and 62,361 women were eligible for the current analysis. Generalized additive models verified the inverted U-shaped association between glycemic indices and SUA levels, but with different inflection points in men and women. The thresholds for FPG, 2h-PG, and HbA1c for men and women were 6.5/8.0 mmol/L, 11.0/14.0 mmol/L, and 6.1/6.5, respectively (SUA levels increased with increasing glycemic indices before the inflection points and then eventually decreased with further increases in the glycemic indices).
Conclusion
An inverted U-shaped association was observed between major glycemic indices and uric acid levels in both sexes, while the inflection points were reached earlier in men than in women.
Aged
;
Asian Continental Ancestry Group
;
Blood Glucose/analysis*
;
China/epidemiology*
;
Cohort Studies
;
Diabetes Mellitus/blood*
;
Female
;
Glucose Tolerance Test
;
Glycated Hemoglobin A/analysis*
;
Glycemic Index
;
Humans
;
Male
;
Middle Aged
;
Uric Acid/blood*
10. Projections from Infralimbic Cortex to Paraventricular Thalamus Mediate Fear Extinction Retrieval
Yan TAO ; Cheng-Yun CAI ; Jia-Yun XIAN ; Xiao-Lin KOU ; Yu-Hui LIN ; Cheng QIN ; Hai-Yin WU ; Lei CHANG ; Chun-Xia LUO ; Dong-Ya ZHU ; Dong-Ya ZHU ; Dong-Ya ZHU
Neuroscience Bulletin 2021;37(2):229-241
The paraventricular nucleus of the thalamus (PVT), which serves as a hub, receives dense projections from the medial prefrontal cortex (mPFC) and projects to the lateral division of central amygdala (CeL). The infralimbic (IL) cortex plays a crucial role in encoding and recalling fear extinction memory. Here, we found that neurons in the PVT and IL were strongly activated during fear extinction retrieval. Silencing PVT neurons inhibited extinction retrieval at recent time point (24 h after extinction), while activating them promoted extinction retrieval at remote time point (7 d after extinction), suggesting a critical role of the PVT in extinction retrieval. In the mPFC-PVT circuit, projections from IL rather than prelimbic cortex to the PVT were dominant, and disrupting the IL-PVT projection suppressed extinction retrieval. Moreover, the axons of PVT neurons preferentially projected to the CeL. Silencing the PVT-CeL circuit also suppressed extinction retrieval. Together, our findings reveal a new neural circuit for fear extinction retrieval outside the classical IL-amygdala circuit.

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